1010213221 has 2 divisors, whose sum is σ = 1010213222. Its totient is φ = 1010213220.

The previous prime is 1010213209. The next prime is 1010213249. The reversal of 1010213221 is 1223120101.

1010213221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668481025 + 341732196 = 25855^2 + 18486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010213221 - 2⁷ = 1010213093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010213251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505106610 + 505106611.

It is an arithmetic number, because the mean of its divisors is an integer number (505106611).

Almost surely, 2^1010213221 is an apocalyptic number.

It is an amenable number.

1010213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010213221 is an equidigital number, since it uses as much as digits as its factorization.

1010213221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1010213221 is about 31783.8515759182. The cubic root of 1010213221 is about 1003.3928823303.

Adding to 1010213221 its reverse (1223120101), we get a palindrome (2233333322).

The spelling of 1010213221 in words is "one billion, ten million, two hundred thirteen thousand, two hundred twenty-one".